'Microsoft.Win32.SafeHandles.SafeWaitHandle' to 'S

I am now tring to modify some code developed before by someone else, and when I build it, the error message will be shown:

 'System.Threading.WaitHandle.Handle' is obsolete: 'Use the SafeWaitHandle property instead.' 

  And the source code related to this warning is:

     wo.hEvent = writeEvent.Handle;

 

 Then, I change it to:

                wo.hEvent = writeEvent.SafeWaitHandle;

 However, when I try building again, some error shows:

  Cannot implicitly convert type 'Microsoft.Win32.SafeHandles.SafeWaitHandle' to 'System.IntPtr' 

 

 

solution:

You can use the method. So your code will look like this:

wo.hEvent = writeEvent.SafeWaitHandle.DangerousGetHandle();

If you want to know why, please read this blog from Brian Grunkemeyer: SafeHandle: A Reliability Case Study.